EP1721930B1 - Composition de caoutchouc - Google Patents
Composition de caoutchouc Download PDFInfo
- Publication number
- EP1721930B1 EP1721930B1 EP05719767.5A EP05719767A EP1721930B1 EP 1721930 B1 EP1721930 B1 EP 1721930B1 EP 05719767 A EP05719767 A EP 05719767A EP 1721930 B1 EP1721930 B1 EP 1721930B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rubber
- polymer
- weight
- group
- polymerization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920001971 elastomer Polymers 0.000 title claims description 305
- 239000005060 rubber Substances 0.000 title claims description 305
- 239000000203 mixture Substances 0.000 title claims description 96
- 229920001577 copolymer Polymers 0.000 claims description 153
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 113
- -1 aromatic vinyl compound Chemical group 0.000 claims description 93
- 150000001993 dienes Chemical class 0.000 claims description 70
- 239000000377 silicon dioxide Substances 0.000 claims description 61
- 229920000642 polymer Polymers 0.000 claims description 50
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 41
- 229920002554 vinyl polymer Polymers 0.000 claims description 41
- 125000005370 alkoxysilyl group Chemical group 0.000 claims description 38
- 239000006229 carbon black Substances 0.000 claims description 30
- 239000000178 monomer Substances 0.000 claims description 30
- 239000003921 oil Substances 0.000 claims description 30
- 125000003277 amino group Chemical group 0.000 claims description 26
- 125000004432 carbon atom Chemical group C* 0.000 claims description 26
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 21
- 125000003118 aryl group Chemical group 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 125000003700 epoxy group Chemical group 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 125000002947 alkylene group Chemical group 0.000 claims description 7
- 238000005227 gel permeation chromatography Methods 0.000 claims description 7
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 claims description 6
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 3
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 description 103
- 239000000945 filler Substances 0.000 description 56
- 239000000243 solution Substances 0.000 description 41
- 150000001875 compounds Chemical class 0.000 description 40
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 34
- 238000000034 method Methods 0.000 description 29
- 235000019198 oils Nutrition 0.000 description 29
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 26
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 22
- 238000004898 kneading Methods 0.000 description 20
- 239000003795 chemical substances by application Substances 0.000 description 18
- 238000013329 compounding Methods 0.000 description 16
- 239000003999 initiator Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 239000002131 composite material Substances 0.000 description 14
- 230000000704 physical effect Effects 0.000 description 14
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 13
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 12
- 238000004807 desolvation Methods 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 12
- 238000009472 formulation Methods 0.000 description 12
- 229910010272 inorganic material Inorganic materials 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 239000006087 Silane Coupling Agent Substances 0.000 description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 11
- 125000000524 functional group Chemical group 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 11
- 239000004636 vulcanized rubber Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 150000003377 silicon compounds Chemical class 0.000 description 10
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 9
- 230000009977 dual effect Effects 0.000 description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 9
- 229920002545 silicone oil Polymers 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- 150000003606 tin compounds Chemical class 0.000 description 9
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 8
- AFRJJFRNGGLMDW-UHFFFAOYSA-N lithium amide Chemical compound [Li+].[NH2-] AFRJJFRNGGLMDW-UHFFFAOYSA-N 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000011256 inorganic filler Substances 0.000 description 7
- 229910003475 inorganic filler Inorganic materials 0.000 description 7
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 7
- PDZGAEAUKGKKDE-UHFFFAOYSA-N lithium;naphthalene Chemical compound [Li].C1=CC=CC2=CC=CC=C21 PDZGAEAUKGKKDE-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- JRFVCFVEJBDLDT-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]-n,n-bis(trimethylsilyl)propan-1-amine Chemical compound CO[Si](C)(OC)CCCN([Si](C)(C)C)[Si](C)(C)C JRFVCFVEJBDLDT-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- DRXHEPWCWBIQFJ-UHFFFAOYSA-N methyl(triphenoxy)silane Chemical compound C=1C=CC=CC=1O[Si](OC=1C=CC=CC=1)(C)OC1=CC=CC=C1 DRXHEPWCWBIQFJ-UHFFFAOYSA-N 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 5
- 239000007822 coupling agent Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 5
- 150000002642 lithium compounds Chemical class 0.000 description 5
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- 230000000379 polymerizing effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 235000014692 zinc oxide Nutrition 0.000 description 5
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 235000021355 Stearic acid Nutrition 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 150000001339 alkali metal compounds Chemical class 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 4
- 229920003244 diene elastomer Polymers 0.000 description 4
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 4
- 150000003112 potassium compounds Chemical class 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000008117 stearic acid Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- TUHNTFBFUHRNMN-UHFFFAOYSA-N (2,2-dimethoxyazasilolidin-1-yl)-trimethylsilane Chemical compound CO[Si]1(OC)CCCN1[Si](C)(C)C TUHNTFBFUHRNMN-UHFFFAOYSA-N 0.000 description 3
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- 239000001089 [(2R)-oxolan-2-yl]methanol Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 238000011088 calibration curve Methods 0.000 description 3
- 125000002897 diene group Chemical group 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 150000002484 inorganic compounds Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 125000000962 organic group Chemical group 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000007870 radical polymerization initiator Substances 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 125000001302 tertiary amino group Chemical group 0.000 description 3
- BSYVTEYKTMYBMK-UHFFFAOYSA-N tetrahydrofurfuryl alcohol Chemical compound OCC1CCCO1 BSYVTEYKTMYBMK-UHFFFAOYSA-N 0.000 description 3
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 3
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical compound CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 2
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 2
- QEDJMOONZLUIMC-UHFFFAOYSA-N 1-tert-butyl-4-ethenylbenzene Chemical compound CC(C)(C)C1=CC=C(C=C)C=C1 QEDJMOONZLUIMC-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- FXRQXYSJYZPGJZ-UHFFFAOYSA-N 2-[(2-methylpropan-2-yl)oxy]ethenylbenzene Chemical compound CC(C)(C)OC=CC1=CC=CC=C1 FXRQXYSJYZPGJZ-UHFFFAOYSA-N 0.000 description 2
- JESXATFQYMPTNL-UHFFFAOYSA-N 2-ethenylphenol Chemical compound OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 2
- BSKHPKMHTQYZBB-UHFFFAOYSA-N 2-methylpyridine Chemical compound CC1=CC=CC=N1 BSKHPKMHTQYZBB-UHFFFAOYSA-N 0.000 description 2
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- XQXPVVBIMDBYFF-UHFFFAOYSA-N 4-hydroxyphenylacetic acid Chemical compound OC(=O)CC1=CC=C(O)C=C1 XQXPVVBIMDBYFF-UHFFFAOYSA-N 0.000 description 2
- FKNQCJSGGFJEIZ-UHFFFAOYSA-N 4-methylpyridine Chemical compound CC1=CC=NC=C1 FKNQCJSGGFJEIZ-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000005103 alkyl silyl group Chemical group 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 2
- 239000010692 aromatic oil Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- GWYFCOCPABKNJV-UHFFFAOYSA-N beta-methyl-butyric acid Natural products CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
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- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
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- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- SCZVXVGZMZRGRU-UHFFFAOYSA-N n'-ethylethane-1,2-diamine Chemical compound CCNCCN SCZVXVGZMZRGRU-UHFFFAOYSA-N 0.000 description 1
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- CWOMTHDOJCARBY-UHFFFAOYSA-N n,n,3-trimethylaniline Chemical compound CN(C)C1=CC=CC(C)=C1 CWOMTHDOJCARBY-UHFFFAOYSA-N 0.000 description 1
- GYVGXEWAOAAJEU-UHFFFAOYSA-N n,n,4-trimethylaniline Chemical compound CN(C)C1=CC=C(C)C=C1 GYVGXEWAOAAJEU-UHFFFAOYSA-N 0.000 description 1
- GJTUWWUXLICYQX-UHFFFAOYSA-N n,n,n',n'-tetramethyloxamide Chemical compound CN(C)C(=O)C(=O)N(C)C GJTUWWUXLICYQX-UHFFFAOYSA-N 0.000 description 1
- UBHHTPOLMACCDD-UHFFFAOYSA-N n,n-dimethyl-4-phenylbut-3-en-1-amine Chemical compound CN(C)CCC=CC1=CC=CC=C1 UBHHTPOLMACCDD-UHFFFAOYSA-N 0.000 description 1
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
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- DZRKBPWATCKLKY-UHFFFAOYSA-N n-benzyl-n-methylprop-2-en-1-amine Chemical compound C=CCN(C)CC1=CC=CC=C1 DZRKBPWATCKLKY-UHFFFAOYSA-N 0.000 description 1
- OBYVIBDTOCAXSN-UHFFFAOYSA-N n-butan-2-ylbutan-2-amine Chemical compound CCC(C)NC(C)CC OBYVIBDTOCAXSN-UHFFFAOYSA-N 0.000 description 1
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- RIWRFSMVIUAEBX-UHFFFAOYSA-N n-methyl-1-phenylmethanamine Chemical compound CNCC1=CC=CC=C1 RIWRFSMVIUAEBX-UHFFFAOYSA-N 0.000 description 1
- SEEYREPSKCQBBF-UHFFFAOYSA-N n-methylmaleimide Chemical compound CN1C(=O)C=CC1=O SEEYREPSKCQBBF-UHFFFAOYSA-N 0.000 description 1
- JACMPVXHEARCBO-UHFFFAOYSA-N n-pentylpentan-1-amine Chemical compound CCCCCNCCCCC JACMPVXHEARCBO-UHFFFAOYSA-N 0.000 description 1
- DYUWTXWIYMHBQS-UHFFFAOYSA-N n-prop-2-enylprop-2-en-1-amine Chemical compound C=CCNCC=C DYUWTXWIYMHBQS-UHFFFAOYSA-N 0.000 description 1
- IJJSYKQZFFGIEE-UHFFFAOYSA-N naphthalene;potassium Chemical compound [K].C1=CC=CC2=CC=CC=C21 IJJSYKQZFFGIEE-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 125000005461 organic phosphorous group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- FABOKLHQXVRECE-UHFFFAOYSA-N phenyl(tripropoxy)silane Chemical compound CCCO[Si](OCCC)(OCCC)C1=CC=CC=C1 FABOKLHQXVRECE-UHFFFAOYSA-N 0.000 description 1
- LDIPVKABLDWRGC-UHFFFAOYSA-N phenylmethoxymethylbenzene;potassium Chemical compound [K].C=1C=CC=CC=1COCC1=CC=CC=C1 LDIPVKABLDWRGC-UHFFFAOYSA-N 0.000 description 1
- NAYYNDKKHOIIOD-UHFFFAOYSA-N phthalamide Chemical compound NC(=O)C1=CC=CC=C1C(N)=O NAYYNDKKHOIIOD-UHFFFAOYSA-N 0.000 description 1
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
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- 230000037048 polymerization activity Effects 0.000 description 1
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- 229920001021 polysulfide Polymers 0.000 description 1
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- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
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- ZRLVQFQTCMUIRM-UHFFFAOYSA-N potassium;2-methylbutan-2-olate Chemical compound [K+].CCC(C)(C)[O-] ZRLVQFQTCMUIRM-UHFFFAOYSA-N 0.000 description 1
- ZGJADVGJIVEEGF-UHFFFAOYSA-M potassium;phenoxide Chemical compound [K+].[O-]C1=CC=CC=C1 ZGJADVGJIVEEGF-UHFFFAOYSA-M 0.000 description 1
- WQKGAJDYBZOFSR-UHFFFAOYSA-N potassium;propan-2-olate Chemical compound [K+].CC(C)[O-] WQKGAJDYBZOFSR-UHFFFAOYSA-N 0.000 description 1
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- 239000001294 propane Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- QLUMLEDLZDMGDW-UHFFFAOYSA-N sodium;1h-naphthalen-1-ide Chemical compound [Na+].[C-]1=CC=CC2=CC=CC=C21 QLUMLEDLZDMGDW-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 239000003549 soybean oil Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
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- 229960002317 succinimide Drugs 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
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- 229960002447 thiram Drugs 0.000 description 1
- LTSUHJWLSNQKIP-UHFFFAOYSA-J tin(iv) bromide Chemical compound Br[Sn](Br)(Br)Br LTSUHJWLSNQKIP-UHFFFAOYSA-J 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 125000005425 toluyl group Chemical group 0.000 description 1
- RYFIHIMBHQWVNQ-UHFFFAOYSA-N tributoxy(chloro)silane Chemical compound CCCCO[Si](Cl)(OCCCC)OCCCC RYFIHIMBHQWVNQ-UHFFFAOYSA-N 0.000 description 1
- SGCFZHOZKKQIBU-UHFFFAOYSA-N tributoxy(ethenyl)silane Chemical compound CCCCO[Si](OCCCC)(OCCCC)C=C SGCFZHOZKKQIBU-UHFFFAOYSA-N 0.000 description 1
- GIHPVQDFBJMUAO-UHFFFAOYSA-N tributoxy(ethyl)silane Chemical compound CCCCO[Si](CC)(OCCCC)OCCCC GIHPVQDFBJMUAO-UHFFFAOYSA-N 0.000 description 1
- GYZQBXUDWTVJDF-UHFFFAOYSA-N tributoxy(methyl)silane Chemical compound CCCCO[Si](C)(OCCCC)OCCCC GYZQBXUDWTVJDF-UHFFFAOYSA-N 0.000 description 1
- INUOIYMEJLOQFN-UHFFFAOYSA-N tributoxy(phenyl)silane Chemical compound CCCCO[Si](OCCCC)(OCCCC)C1=CC=CC=C1 INUOIYMEJLOQFN-UHFFFAOYSA-N 0.000 description 1
- MTLNOUGNCGMFMH-UHFFFAOYSA-H trichloro(2-trichlorostannylethyl)stannane Chemical compound Cl[Sn](Cl)(Cl)CC[Sn](Cl)(Cl)Cl MTLNOUGNCGMFMH-UHFFFAOYSA-H 0.000 description 1
- BCMNMJSREMRSFP-UHFFFAOYSA-H trichloro(4-trichlorostannylbutyl)stannane Chemical compound Cl[Sn](Cl)(Cl)CCCC[Sn](Cl)(Cl)Cl BCMNMJSREMRSFP-UHFFFAOYSA-H 0.000 description 1
- INTLMJZQCBRQAT-UHFFFAOYSA-K trichloro(octyl)stannane Chemical compound CCCCCCCC[Sn](Cl)(Cl)Cl INTLMJZQCBRQAT-UHFFFAOYSA-K 0.000 description 1
- BOEGBYDAWIJZGT-UHFFFAOYSA-N trichloromethyltin Chemical compound ClC(Cl)(Cl)[Sn] BOEGBYDAWIJZGT-UHFFFAOYSA-N 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- NKLYMYLJOXIVFB-UHFFFAOYSA-N triethoxymethylsilane Chemical compound CCOC([SiH3])(OCC)OCC NKLYMYLJOXIVFB-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- ZYMHKOVQDOFPHH-UHFFFAOYSA-N trimethoxy(oct-1-enyl)silane Chemical compound CCCCCCC=C[Si](OC)(OC)OC ZYMHKOVQDOFPHH-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- JPPHEZSCZWYTOP-UHFFFAOYSA-N trimethoxysilylmethyl prop-2-enoate Chemical compound CO[Si](OC)(OC)COC(=O)C=C JPPHEZSCZWYTOP-UHFFFAOYSA-N 0.000 description 1
- IXJNGXCZSCHDFE-UHFFFAOYSA-N triphenoxy(phenyl)silane Chemical compound C=1C=CC=CC=1O[Si](C=1C=CC=CC=1)(OC=1C=CC=CC=1)OC1=CC=CC=C1 IXJNGXCZSCHDFE-UHFFFAOYSA-N 0.000 description 1
- FPKMSRRUOFZBQR-UHFFFAOYSA-N triphenoxymethylsilane Chemical compound O(C1=CC=CC=C1)C(OC1=CC=CC=C1)(OC1=CC=CC=C1)[SiH3] FPKMSRRUOFZBQR-UHFFFAOYSA-N 0.000 description 1
- DVYQCRRVXOXJSA-UHFFFAOYSA-N tris(2-ethylhexoxy)-methylsilane Chemical compound CCCCC(CC)CO[Si](C)(OCC(CC)CCCC)OCC(CC)CCCC DVYQCRRVXOXJSA-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
- 125000000391 vinyl group Chemical class [H]C([*])=C([H])[H] 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/006—Rubber characterised by functional groups, e.g. telechelic diene polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/905—Tread composition
Definitions
- the present invention relates to a rubber mainly comprising a conjugated diene-based (co)polymer rubber which can be made into vulcanized rubber which is low in rolling resistance and excellent in wet skid properties, and has sufficient wear resistance, tensile strength, when an inorganic filler such as silica is blended as a reinforcing material, and to an oil-extended rubber containing this rubber and an extender oil. Further, the invention relates to a rubber composition containing the conjugated diene-based rubber or the oil-extended rubber and the inorganic filler, and having excellent processability.
- the vulcanized rubber comprising this rubber composition is useful particularly as tire treads.
- raw rubber materials such as conjugated diene-based (co) polymer rubbers from which rubber compositions for tires having low rolling resistance, excellent in wear resistance and failure characteristics, and high in wet skid resistance which is a representative index of driving stability can be prepared.
- the hysteresis loss can be evaluated using various properties as indexes. For example, raw rubber materials having high impact resilience at 50 to 80°C, a low tan ⁇ at 50 to 80°C or low Goodrich heat build-up are preferred.
- the raw rubber materials with low hysteresis loss include natural rubber, isoprene rubber, butadiene rubber. However, these have the problem of low wet skid resistance.
- the present inventors have proposed a rubber-inorganic compound composite material containing (I) a conjugated diolefin (co)polymer rubber having a primary amino group and an alkoxysilyl group bonded to a polymer chain and (II) an inorganic compound ( JP-A-2004-067982 ). Then, the conjugated diolefin (co)polymer rubber (I) used herein has the primary amino group and the alkoxysilyl group on the polymer chain, and the weight average molecular weight of the rubber is usually form 100,000 to 2,000,000.
- the alkoxysilyl group of the above-mentioned conjugated diolefin (co)polymer rubber reacts with silica which acts as a filler, and the amino group reacts with carbon black which acts as a filler, resulting in the formation of the rubber-inorganic compound composite material having affinity for these fillers.
- a rubber composition using this composite material is useful as tires or vibration insulators.
- the conjugated diolefin (co)polymer rubber (I) of JP-A-2004-067982 has a weight average molecular weight as high as 100,000 to 2,000,000, similarly to normal rubber.
- the alkoxysilyl group or amino group existing in the molecular chain reacts with silica or carbon black to increase the melt viscosity in kneading, which causes poor processability.
- an increase in product percent defective and a rise in production cost are liable to cause problems.
- EP 1 457 501 discloses a conjugated (co)polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, as shown by formula (1), wherein the (co)polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to a (co)polymer chain.
- the conjugated (co)polymer rubber has a weight average molecular weight of 100,000 to 2,000,000, has satisfactory processability, and can give an automotive tire tread having a balance among wear resistance, failure characteristics, low hysteresis loss and wet-skid characteristics (see Abstract and paragraphs [0031] and [0127] of D1).
- An object of the invention is to provide a conjugated diene-based (co)polymer rubber which is excellent in processability of unvulcanized compounded rubber, excellent in wear resistance and wet skid resistance of vulcanized rubber, low in rolling resistance, and therefore, suitable for tire applications, particularly for tire tread applications in which importance is given to low fuel consumption and safety.
- the present invention relates to a rubber composition as defined in claim 1. Further beneficial embodiments are disclosed in dependent claims 2 to 4.
- P is a (co)polymer chain comprising a conjugated diene alone or a conjugated diene and an aromatic vinyl compound
- R 1 is an alkylene group having 1 to 12 carbon atoms
- R 2 and R 3 are each independently an alkyl group having 1 to 20 carbon atoms or an aryl group
- n is an integer of 1 or 2
- m is an integer of 1 or 2
- k is an integer of 1 or 2
- P, R 1 , R 2 and R 3 have the same definitions as given for the above-mentioned formula (1)
- j is an integer of 1 to 3
- h is an integer of 1 to 3, with the proviso that j+h is an integer of 2 to 4.
- component (II) is preferably one having at least one selected from the group consisting of an amino group, an alkoxysilyl group, an epoxy group, a hydroxyl group, a tin atom and silicon atom, on a polymer chain.
- an extending oil may be further incorporated in an amount of 10 to 50 parts by weight based on 100 parts by weight of the total amount of the rubber components including the above-mentioned components (I) and (II).
- the rubber composition of the invention may further contain silica and/or carbon black, and the content thereof is from 1 to 150 parts by weight based on 100 parts by weight of the total amount of the above-mentioned components (I) and (II).
- the rubber composition of the invention is excellent in processability of unvulcanized compounded rubber, excellent in wear resistance and wet skid resistance of vulcanized rubber, low in rolling resistance, and therefore, suitable for tire applications, particularly for tire tread applications in which importance is given to low fuel consumption and safety. Best Mode for Carrying Out the Invention
- the conjugated diene-based (co) polymer rubber used in the rubber-inorganic compound composite material of the invention is characterized in that it is a (co)polymer rubber obtained by (co)polymerizing a conjugated diene alone or this and an aromatic vinyl compound, and has a primary amino group and an alkoxysilyl group.
- the conjugated diene-based (co) polymer rubber (I) is represented by the following formula (1) or (2).
- R 1 -NH 2 (R 1 -NH 2 ) n
- P is a (co) polymer chain comprising a conjugated diene alone or a conjugated diene and an aromatic vinyl compound
- R 1 is an alkylene group having 1 to 12 carbon atoms
- R 2 and R 3 are each independently an alkyl group having 1 to 20 carbon atoms or an aryl group
- n is an integer of 1 or 2
- m is an integer of 1 or 2
- k is an integer of 1 or 2 with the proviso that n+m+k is an integer of 3 or 4
- P, R 1 , R 2 and R 3 have the same definitions as given for the above-mentioned formula (1)
- j is an integer of 1 to 3
- h is an integer of 1 to 3, with the proviso that j+h is an integer of 2 to 4.
- Component (I) has the primary amino group and the alkoxysilyl group together, thereby having affinity for fillers such as silica and carbon black, which makes it possible to blend the fillers in large amounts and homogeneously.
- the content of the primary amino group bonded to (co)polymer rubber (I) is from 1 to 600 mmol/kg of (co)polymer rubber polymer.
- the content is preferably from 5 to 500 mmol/kg of (co)polymer rubber polymer, and more preferably from 10 to 500 mmol/kg of (co)polymer rubber polymer.
- the weight of (co)polymer rubber polymer as used herein means the weight of only a polymer containing no additives such as an antiaging agent added during or after the production.
- the primary amino group may be bonded to any one of a polymerization initiating terminal, a polymerization terminating terminal, a polymer main chain and a side chain, it is preferably introduced into the polymerization initiating terminal or the polymerization terminating terminal, in that energy disappearance from a polymer terminal is inhibited to be able to improve hysteresis loss characteristics.
- the content of the alkoxysilyl group bonded to the (co)polymer rubber is from 1 to 600 mmol/kg of (co)polymer rubber polymer, preferably from 5 to 500 mmol/kg of (co)polymer rubber polymer, and more preferably from 10 to 500 mmol/kg of (co) polymer rubber polymer.
- the alkoxysilyl group may be bonded to any one of a polymerization initiating terminal, a polymerization terminating terminal, a polymer main chain and a side chain, it is preferably introduced into the polymerization initiating terminal or the polymerization terminating terminal, in that energy disappearance from a polymer terminal is inhibited to be able to improve hysteresis loss characteristics.
- the above-mentioned (co)polymer rubber (I) used in the invention can be produced by polymerizing either a conjugated diene alone or this and an aromatic vinyl compound in a hydrocarbon solvent by anionic polymerization using an organic alkali metal and/or an organic alkali earth metal as an initiator, adding a compound having a protected primary amino group and an alkoxysilyl group, at the time when the polymerization has substantially completed, to react it with a living polymer chain terminal, and then conducting deblocking (hydrolysis).
- this production process (1) the primary amino group and the alkoxysilyl group can be easily introduced at the same time by a single-step reaction, and (2) it is possible to obtain a high introduction rate.
- the compound having a protected primary amino group and an alkoxysilyl group includes, for example, a compound represented by the following formula (3) or (4): wherein R 1 is an alkylene group having 1 to 12 carbon atoms, R 2 and R 3 are each independently an alkyl group having 1 to 20 carbon atoms or an aryl group, R 4 , R 5 and R 6 are each independently an alkyl group having 1 to 20 carbon atoms or aryl group, or two of them may combine with each other to form a ring together with silicon atoms to which they are bonded, g is an integer of 1 or 2, and f is an integer of 1 to 10, wherein R 1 , R 2 and R 3 have the same definitions as given for the above-mentioned formula (3), R 4 , R 5 and R 6 also have the same definitions as given for the above-mentioned formula (3), and e is an integer of 1 or 2.
- the alkylene groups having 1 to 12 carbon atoms of R 1 include, for example, a methylene group, an ethylene group and a propylene group.
- the alkyl groups having 1 to 20 carbon atoms include, for example, a methyl group, an ethyl group and a propyl group.
- the aryl groups include, for example, a phenyl group, toluyl group and a naphthyl group.
- the ring formed by combining two of R 4 , R 5 and R 6 together with silicon atoms to which they are bonded may be a 4- to 7-membered ring.
- the protective groups for the amino group include, for example, an alkylsilyl group.
- the alkylsilyl groups include, for example, a trimethylsilyl group, a triethylsilyl group, a triphenylsilyl group, a methyldiphenylsilyl group and an ethylmethylphenylsilyl group.
- the compounds having a protected amino group and an alkoxysilyl group include, for example, N,N-bis(trimethylsilyl)aminopropylmethyldimethoxysilane, 1-trimethylsilyl-2,2-dimethoxy-1-aza-2-silacyclopentane, N,N-bis(trimethylsilyl)-aminopropyltrimethoxysilane, N,N-bis(trimethylsilyl)-aminopropyltriethoxysilane, N,N-bis(trimethylsilyl)amino-propylmethyldiethoxysilane, N,N-bis(trimethylsilyl)amino-ethyltrimethoxysilne, N,N-bis(trimethylsilyl)aminoethyltriethoxysilne, N,N-bis(trimethylsilyl)aminoethylmethyldimethoxysilane, N,N-bis(trimethylsilyl)
- reaction of the living polymer chain terminal for example, P - Li + with N,N-bis(trimethylsilyl)aminopropylmethyldimethoxysilane which is the compound having a protected amino group and an alkoxysilyl group
- P represents a (co)polymer chain of a conjugated diene or a conjugated diene and an aromatic vinyl compound.
- reaction of the living polymer chain terminal with 1-trimethylsilyl-2,2-dimethoxy-1-aza-2-silacyclopentane which is the compound having a protected amino group and an alkoxysilyl group can be represented by the following formula:
- 1-trimethylsilyl-2,2-dimethoxy-1-aza-2-silacyclopentane which is the above-mentioned compound having a protected amino group and an alkoxysilyl group can be allowed to react with two molecules of the living polymer chain terminals, and in that case, the reaction can be represented by the following reaction formula:
- the (co)polymer rubber of the invention can be produced by polymerizing either a conjugated diene alone or a conjugated diene and an aromatic vinyl compound in a hydrocarbon solvent by anionic polymerization using a lithium amide initiator represented by the following formula (5) or (6), adding an alkoxysilane compound represented by the following formula (7) to react it with a living polymer chain terminal at the time when the polymerization has substantially completed, and then conducting deblocking (hydrolysis).
- R 4 R 5 R 6 Si 2 -N-R 1 -Li (5)
- R 1 , R 4 , R 5 and R 6 have the same definitions as given for the above-mentioned formula (3)
- R 7 and R 8 are each independently hydrogen, an alkyl group having 1 to 20 carbon atoms or an aryl group
- d is an integer of 1 to 7
- R 2 and R 3 have the same definitions as given for the above-mentioned formula (3)
- X is a halogen atom
- c is an integer of 0 to 2
- b is an integer of 1 to 4, with the proviso that c+d is an integer of 2 to 4.
- the (co)polymer rubber of the invention is represented by the following formula (1) or (2): wherein P is a (co)polymer chain comprising a conjugated diene alone or a conjugated diene and an aromatic vinyl compound, R 1 is an alkylene group having 1 to 12 carbon atoms, R 2 and R 3 are each independently an alkyl group having 1 to 20 carbon atoms or an aryl group, n is an integer of 1 or 2, m is an integer of 1 or 2, and k is an integer of 1 or 2, with the proviso that n+m+k is an integer of 3 or 4, wherein P, R 1 , R 2 and R 3 have the same definitions as given for the above-mentioned formula (1), j is an integer of 1 to 3, and h is an integer of 1 to 3, with the proviso that j+h is an integer of 2 to 4.
- (Co)polymer rubber (I) used in the invention is a (co)polymer obtained by (co)polymerizing either a conjugated diene alone or a conjugated diene and an aromatic vinyl compound, with a copolymerizable third monomer depending on the circumstances, and is characterized in that it has a primary amino group and an alkoxysilyl group, as described above.
- conjugated diene compound used in the invention there is preferably used, for example, 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 2-chloro-1,3-butadiene, 1,3-pentadiene, a mixture thereof.
- the amount of the conjugated diene used is from 50 to 95% by weight, based on all monomers. Less than 50% by weight results in increased hysteresis loss.
- the aromatic vinyl compounds include, for example, styrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, ⁇ -methylstyrene, 2,4-dimethylstyrene, 2,4-diisopropylstyrene, 4-tert-butylstyrene, divinylbenzene, tert-butoxystyrene, vinylbenzyldimethylamine, (4-vinylbenzyl) dimethyl aminoethyl ether, N,N-dimethylaminoethylstyrene, vinylpyridine, a mixture thereof and the like. Of these, styrene is particularly preferred.
- the amount of the aromatic vinyl compound used is preferably from 0.001 to 50% by weight, and more preferably from 5 to 50% by weight, based on all monomers.
- the copolymerizable third monomers include, for example, acrylonitrile, methyl methacrylate, ethyl methacrylate, methyl acrylate, ethyl acrylate, hydroxyethyl methacrylate and hydroxyethyl acrylate.
- the amount of the third monomer used is usually less than 25% by weight based on all monomers.
- (Co)polymer rubber (I) of the invention includes the following (co)polymer rubber of (I-1) or (I-2) as a preferred embodiment.
- the content of the bonded aromatic vinyl compound bonded to the polymer chain is from 5% by weight to less than 50% by weight, and more preferably from 10% by weight to 47% by weight, based on the (co) polymer rubber, as described above.
- the content of the bonded aromatic vinyl compound is less than 5% by weight, wet skid characteristics, wear resistance and fracture characteristics deteriorate.
- the content is 50% by weight or more, a balance between hysteresis loss and wet skid characteristics deteriorate
- the content of the conjugated diene bonded to the polymer chain that is to say, the content of polymerization units of the conjugated diene is from more than 50% by weight to 95% by weight, and preferably from 53 to 90% by weight.
- the vinyl bond (1,2-bond and/or 3,4-bond) content is 30% or more, and preferably from 35% to less than 70%, based on polymerization units of the conjugated diene.
- the vinyl bond content is less than 30%, a balance between hysteresis loss and wet skid characteristics deteriorates. Further, it is difficult to exceed 90% by a usual synthesis method of the copolymer rubber of the aromatic vinyl compound and the conjugated diene.
- the content of the bonded aromatic vinyl compound bonded to the polymer chain is from 5 to 50% by weight, and preferably from 10 to 48% by weight, based on the (co)polymer rubber, as described above.
- the content of the bonded aromatic vinyl compound is less than 5% by weight, wet skid characteristics, wear resistance and fracture characteristics deteriorate.
- exceeding 50% by weight results in increased hysteresis loss.
- the content of polymerization units of the conjugated diene is from 50 to 95% by weight, and preferably from 52 to 90% by weight.
- the vinyl bond (1,2-bond and/or 3,4-bond) content in polymerization units of the conjugated diene is 30 to 70%, and preferably from 35 to 65%, based on polymerization units of the conjugated diene.
- the vinyl bond content is less than 30%, wet skid characteristics deteriorate to cause poor driving stability.
- exceeding 65% results in deterioration of breaking strength and wear resistance, and increased hysteresis loss.
- the first production process will be described below.
- the polymerization reaction and the reaction with the compound having the primary amino group protected and the alkoxysilyl group for obtaining (co)polymer rubber (I) of the invention are usually conducted within the temperature range of 0 to 120°C, under either constant temperature conditions or elevated temperature conditions.
- the hydrolysis for deblocking the primary amino group protected is conducted by adding a 2-fold or more molar excess of water or acidic water in relation to the compound having the primary amino group protected and the alkoxysilyl group to conduct the reaction for 10 minutes or more, preferably for 30 minutes or more.
- the polymerization system may be either a batch polymerization system or a continuous polymerization system.
- Examples of the initiators of the organic alkali metals and the organic alkali earth metals used in the polymerization include alkyllithiums such as n-butyllithium, sec-butyllithium and t-butyllithium, alkylenedilithiums such as 1,4-dilithiobutane, phenyllithium, stilbenelithium, lithiumnaphthalene, sodiumnaphthalene, potassiumnaphthalene, n-butylmagnesium, n-hexylmagnesium, ethoxycalcium, calcium stearate, t-butoxystrontium, ethoxybarium, isopropoxybarium, ethylmercaptobarium, t-butoxybarium, phenoxybarium, diethylaminobarium, barium stearate.
- alkyllithiums such as n-butyllithium, sec-butyllithium and t-butyllithium
- an ether compound such as diethyl ether, di-n-butyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, propylene glycol dimethyl ether, propylene glycol diethyl ether, propylene glycol dibutyl ether, tetrahydrofuran, 2,2-(bistetrahydrofurfuryl)propane, bis-tetrahydrofurfuryl formal, methyl ether of tetrahydrofurfuryl alcohol, ethyl ether of tetrahydrofurfuryl alcohol, butyl ether of tetrahydrofurfuryl alcohol, ⁇ -methoxytetrahydrofuran, dimethoxybenzene or dimethoxyethane and/or a tertiary amine compound such as triethylamine, pyridine, N,N,N',N'
- hydrocarbon solvents used in polymerizing (co)polymer rubber (I) of the invention include, for example, pentane, hexane, heptane, octane, methylcyclopentane, cyclohexane, benzene, toluene, xylene. Of these, cyclohexane and heptane are preferred.
- a potassium compound may be added together with the initiator.
- potassium alkoxide represented by potassium isopropoxide, potassium t-butoxide, potassium t-amyloxide, potassium n-heptaoxide, potassium benzyloxide or potassium phenoxide
- a potassium salt of an organic sulfonic acid such as dodecylbenzenesulfonic acid, tetradecylbenzenesulfonic acid, hexadecylbenzenesulfonic acid or octadecylbenzenesulfonic acid
- a potassium salt of an organic phosphorous acid partial ester such as diethyl phosphite, diisopropy
- These potassium compounds can be added in an amount of 0.005 to 0.5 moles per gram atomic equivalent of alkali metal of initiator. Less than 0.005 mole results in no appearance of the effect of adding the potassium compound (improvement in reactivity of the initiator, randomization of the aromatic vinyl compound or giving of the single chain), whereas exceeding 0.5 mole results in a decrease in polymerization activity to cause productivity to substantially decrease, and in a decrease in modification efficiency at the time when the reaction for modifying the polymer terminal with the functional group is conducted.
- the coupling agents which are used in combination with the amino group-containing alkoxysilane compounds and allowed to react with the polymerization active terminals include at least one compound selected from the group consisting of (a) an isocyanate compound and/or an isothiocyanate compound, (b) an amide compound and/or an imide compound, (c) a pyridyl-substituted ketone compound and/or a pyridyl-substituted vinyl compound, (d) a silicon compound, (e) an ester compound, (f) a ketone compound and (g) a tin compound.
- isocyanate compounds or the isothiocyanate compounds which are component (a), preferably include 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, diphenylmethane diisocyanate, polymeric type diphenylmethane diisocyanate (C-MDI), isophorone diisocyanate, hexamethylene diisocyanate, 1,3,5-benzene triisocyanate, phenyl-1,4-diisothiocyanate.
- C-MDI polymeric type diphenylmethane diisocyanate
- amide compounds or the imide compounds, which are component (b) preferably include amide compounds such as succinamide, phthalamide, N,N,N',N'-tetramethylphthalamide, oxamide and N,N,N',N'-tetramethyloxamide; and imide compounds such as succinimide, N-methyl-succinimide, maleimide, N-methylmaleimide, phthalimide and N-methylphthalimide.
- pyridyl-substituted ketone compounds or the pyridyl-substituted vinyl compounds, which are component (c), preferably include dibenzoylpyridine, diacetylpyridine, divinylpyridine.
- silicon compounds which are component (d) preferably include dibutyldichlorosilicon, methyltrichlorosilicon, methyldichlorosilicon, tetrachlorosilicon, triethoxymethylsilane, triphenoxymethylsilane, trimethoxysilane, methyltriethoxysilane, 4,5-epoxyheptylmethyldimethoxysilane, bis(triethoxysilylpropyl) tetrasulfide.
- ester compounds which are component (e)
- ketone compounds which are component (f), preferably include N,N,N',N'-tetramethyl-4,4'-diaminobenzophenone, N,N,N',N'-tetraethyl(4,4'-di-amino)benzophenone, N,N-dimethyl-1-aminobenzoquinone, N,N,N',N'-tetramethyl-1,3-diaminobenzoquinone, N,N-di-methyl-1-aminoanthraquinone, N,N,N',N'-tetramethyl-1,4-di-aminoanthraquinone.
- tin compounds which are component (g), preferably include tetrachlorotin, tetra-bromotin, trichlorobutyltin, trichloromethyltin, trichloro-octyltin, dibromodimethyltin, dichlorodimethyltin, dichlorodibutyltin, dichlorodioctyltin, 1,2-bis(trichlorostannyl)ethane, 1,2-bis(methyldichlorostannyl)ethane, 1,4-bis(trichlorostannyl)butane, 1,4-bis(methyldichlorostannyl)butane, ethyltin tristearate, butyltin trisoctanoate, butyltin trisstearate, butyltin trislaurate, dibutyltin bisoctanoate, dibutyltin bisstearate, dibutyltin bisoctan
- the polymerization reaction according to the lithium amide initiator whose primary amino group is protected and the reaction with the alkoxysilane compound for obtaining (co)polymer rubber (I) of the invention are usually conducted within the temperature range of 0 to 120°C, under either constant temperature conditions or elevated temperature conditions.
- the hydrolysis for deblocking the primary amino group protected is conducted by adding a 2-fold or more molar excess of water or acidic water in relation to the lithium amide initiator whose primary amino group is protected to conduct the reaction for 10 minutes or more, preferably for 30 minutes or more.
- the polymerization system may be either a batch polymerization system or a continuous polymerization system.
- the lithium amide initiators represented by the above-mentioned formula (5) include, for example, 3-[N,N-bis(trimethylsilyl)]-1-propyllithium, 3-[N,N-bis(trimethylsilyl)]-2-methyl-1-propyllithium, 3-[N,N-bis(trimethyl-silyl)1-2,2-dimethyl-1-propyllithium, 4-[N,N-bis(trimethylsilyl)]-1-butyllithium, 5-[N,N-bis(trimethylsilyl)]-1-pentyllithium and 8-[N,N-bis(trimethylsilyl)]-1-octyllithium.
- the lithium amide initiators represented by the above-mentioned formula (6) include, for example, 3- (2, 2, 5, 5-tetramethyl-2,5-disila-1-azacyclopentane)-1-propyllithium, 2-methyl-3-(2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentane)-1-propyllithium, 2,2-dimethyl-3-(2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentane)-1-propyllithium, 4-(2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentane)-1-butyllithium and 6-(2,2,5,5-tetramethyl-2,5-disila-1-azacyclopentane)-1-hexyllithium.
- lithium amide initiator there may be used a synthetic compound obtained by reacting a corresponding halide and an organic lithium compound in a hydrocarbon solvent.
- the reaction of the halide and the organic lithium may be previously conducted in a reaction vessel different from a polymerization reactor.
- the halides corresponding to the above-mentioned lithium amide initiators include the following formula (8) or (9): (R 4 R 5 R 6 Si) 2 -N-R 1 -X (8) wherein R 1 , R 4 , R 5 and R 6 have the same meanings as given for the above-mentioned formula (3), and X is a halogen atom, wherein R 1 has the same meaning as given for the above-mentioned formula (3), R 7 and R 8 are each independently hydrogen, an alkyl group having 1 to 20 carbon atoms or an aryl group, and d is an integer of 1 to 7.
- alkoxysilane compounds represented by the above-mentioned formula (7) include, for example, tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane, tetraphenoxysilane, tetratoluyloxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, methyltributoxysilane, methyltriphenoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltripropoxysilane, ethyltributoxysilane, ethyltriphenoxysilane dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldipropoxysilane, dimethyldibutoxysilane, dimethyldiphenoxysilane, diethyldime
- the weight average molecular weight of (co) polymer rubber (I) of the invention is from 1,000 to 90,000, and preferably from 50,000 to 70,000. Less than 1,000 results in insufficient breaking strength, wear resistance, low hysteresis loss properties of the resulting rubber composition, whereas exceeding 90,000 results in reaction of the amino group and the alkoxysilyl group in component (I) with carbon black or silica to increase melt viscosity at the time of kneading, which causes inferior processability.
- the use of the rubber having a relatively low weight average molecular weight of 1,000 to 90,000 as (co) polymer rubber (I) allows the amino group and the alkoxysilyl group of component (I) to react with carbon black or silica to apparently increase the molecular weight.
- (co)polymer rubbers (II) used in the invention is polymer rubber of a conjugated diene monomer derived from 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene or chloroprene, and a copolymer rubber of the above-mentioned conjugated diene monomer and another monomer, other than component (I).
- a random copolymer rubber obtained by copolymerizing monomers containing the above-mentioned conjugated diene monomer, an olefinic unsaturated nitrile monomer such as acrylonitrile or methacrylonitrile, an aromatic vinyl monomer such as styrene, 2-methylstyrene, ⁇ -methylstyrene, 2,4-dimethylstyrene, 4-tert-butylstyrene or tert-butoxystyrene, and another monomer.
- Co)polymer rubber (II) is preferably a conjugated diene-based (co)polymer rubber 30 to 100% by weight of which has at least one functional group of an alkoxysilyl group, an amino group, a hydroxyl group and an epoxy group, a tin atom or silicon atom, when the rubber is taken as 100% by weight. This sufficiently improves the tan ⁇ and wear resistance of vulcanized rubber obtained using the rubber composition containing the conjugated diene-based (co)polymer rubber having the above-mentioned functional group.
- the functional group can be introduced into a rubber molecule by copolymerizing a monomer having the above-mentioned functional group at the time when the conjugated diene-based (co) polymer rubber is produced. Further, the (co)polymer rubber having the tin atom or the silicon atom can be obtained by coupling a tin compound or a silicon compound with a living anion of the conjugated diene-based (co)polymer rubber.
- the alkoxysilyl group-containing monomers include (meth)acryloxymethyltrimethoxysilane, (meth)acryloxydimethyldimethoxysilane, ⁇ -(meth)acryloxypropyltrimethoxysilane, ⁇ -(meth)acryloxypropylmethyldimethoxysilane, ⁇ -(meth)acryloxypropylmethyldiphenoxysilane, ⁇ -(meth)acryloxypropylmethyldibenzyloxysilane.
- the amino group-containing monomers are preferably tertiary amino group-containing monomers, and include (a) dialkylaminoalkyl (meth) acrylates such as dimethylaminomethyl (meth)acrylate, 2-(di-n-propylamino)ethyl (meth)acrylate, 2-dimethylaminopropyl (meth)acrylate and 2-(di-n-propylamino)propyl (meth)acrylate, (b) N-dialkylaminoalkyl group-containing unsaturated amides such as N-dimethylaminomethyl(meth)acrylamide and N-(2-dimethylaminoethyl)-(meth)acrylamide, (c) tertiary amino group-containing vinyl aromatic compounds such as N,N-dimethyl-p-aminostyrene, dimethyl(p-vinylbenzyl)amine, dimethyl(p-vinylphenethyl)-amine, dimethyl(p-
- dialkylaminoalkyl (meth) acrylates and tertiary amino group-containing vinyl aromatic compounds are preferred.
- the hydroxyl group-containing monomers include (a) hydroxyalkyl (meth)acrylates such as 2-hydroxyethyl (meth)-acrylate and 2-hydroxypropyl (meth)acrylate, (b) mono-(meth) acrylates of polyalkylene glycols (the number of alkylene glycol units is, for example, 2 to 23) such as polyethylene glycol and polypropylene glycol, (c) hydroxyl group-containing unsaturated amides such as N-hydroxymethyl(meth)acrylamide, N-(2-hydroxyethyl)(meth)acrylamide and N,N-bis(2-hydroxy-ethyl)(meth)acrylamide, (d) hydroxyl group-containing vinyl aromatic compounds such as o-hydroxystyrene, o-hydroxy- ⁇ -methylstyrene and p-vinylbenzyl alcohol, (e) (meth)allyl alcohol.
- hydroxyalkyl (meth)acrylates and hydroxyl group-containing vinyl aromatic compounds
- the epoxy group-containing monomers include (meth)acryl glycidyl ether, glycidyl (meth)acrylate, 3,4-oxycyclohexyl (meth)acrylate.
- the monomers having these specific functional groups may each be used alone or in combination of two or more of them.
- the content of repeating units of the above-mentioned various monomers constituting the above-mentioned conjugated diene-based (co)polymer rubber (II) is preferably from 0.1 to 10% by weight, and particularly preferably from 0.1 to 5% by weight.
- this content is less than 0.1% by weight, the affinity of conjugated diene-based (co)polymer rubber (II) for the filler such as silica becomes insufficient, sometimes resulting in insufficient improvement in the tan ⁇ , wear resistance of the resulting vulcanized rubber.
- conjugated diene-based (co)polymer rubber (II) tends to strongly coagulate with the filler such as silica, resulting in reduced processability.
- the above-mentioned functional group can be introduced into a rubber molecule by using a polymerization initiator or polymerization terminator having the functional group at the time when conjugated diene-based (co)polymer rubber (II) is produced.
- Such polymerization initiators include a reaction product of an organic alkali metal compound with a secondary amine compound or a tertiary amine compound.
- a secondary amine compound there can be used dimethylamine, diethylamine, dipropylamine, di-n-butylamine, di-sec-butylamine, di-pentylamine, dihexylamine, di-n-octylamine, di-(2-ethylhexyl)amine, di-cyclohexylamine, N-methylbenzylamine, di-allylamine, piperidine, pyrrolidine,inorpholine.
- tertiary amine compound there can be used N,N-dimethyl-o-toluidine, N,N-dimethyl-p-toluidine, N,N-dimethyl-m-toluidine, ⁇ -picoline, ⁇ -picoline, ⁇ -picoline.
- the organic alkali metal compound is preferably an organic lithium compound such as ethyllithium, propyllithium, n-butyllithium, sec-butyllithium t-butyllithium, hexyllithium or a mixture thereof, and n-butyllithium and sec-butyllithium are particularly preferred.
- the reaction of the secondary amine compound or the tertiary amine compound with the organic alkali metal compound is required to be conducted at a molar ratio of active hydrogen in a structure of the secondary amine compound or active hydrogen in a structure of the tertiary amine compound to the organic alkali metal compound ranging from 1: 0.2 to 1:5.0.
- This molar ratio is preferably from 1:0.5 to 1:2.0, and more preferably from 1:0.8 to 1:1.2.
- an epoxy group-containing polymerization terminator represented by the following general formula (10): wherein R is a hydrocarbon group having 1 to 20 carbon atoms, an organic group having no active hydrogen or a silicon compound, and the hydrocarbon group having 1 to 20 carbon atoms or the organic group having no active hydrogen is an alkyl, alkylene, cycloalkyl, aryl or arylene group, or another organic group having no active hydrogen such as -OH, -SH or -NH- in its molecule.
- the distance between the amino groups is 12 or less by the number of carbon atoms. 1 is a number of 1 or more, preferably from 1 to 4, and particularly preferably 2.
- an alkoxyl silyl group-containing polymerization terminator represented by the following general formula (11): X n Si(OR') m R" 4-m-n (11) wherein X is a halogen atom, and preferably a chlorine atom, a bromine atom or a iodine atom; R' is a hydrocarbon group having 1 to 20 carbon atoms, preferably 4 to 20 carbon atoms, that is to say, OR' is an alkoxyl group having 1 to 20 carbon atoms, and preferably a non-hydrolyzable alkoxyl group having 4 to 20 carbon atoms; R" is an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms; m is a number of 1 to 4; n is a number of 0 to 2; and the sum of m and n is
- alkoxysilyl group-containing polymerization terminators include tetraphenoxysilane, methyltris(2-ethylhexyloxy)silane, ethyltris(2-ethylhexyloxy)silane, methyltriphenoxysilane, ethyltriphenoxysilane, vinyltris(2-ethylhexyloxy)silane, vinyltriphenoxysilane, methylvinylbis(2-ethylhexyloxy)silane, ethylvinyldiphenoxysilane, tri-tert-butoxymonochlorosilane, triphenoxymonochlorosilane, monochloromethyldiphenoxysilane, monochloromethylbis(2-ethylhexyloxy)silane, monobromoethyldiphenoxysilane, monobromovinyldiphenoxysilane, monobromoisopropen
- the rubbers react with silanol groups of silica or quinones of carbon black, so that the affinity of the rubbers for silica is enhanced to obtain a more sufficient reinforcing effect.
- the weight average molecular weight of the above-mentioned conjugated diene-based (co)polymer rubber (II) in terms of polystyrene as measured by GPC (gel permeation chromatography) is from 100,000 to 2,000,000, and preferably from 150,000 to 1,500,000.
- GPC gel permeation chromatography
- conjugated diene-based (co)polymer rubber (II) is not particularly limited, it can be produced according to solution polymerization, emulsion polymerization. Of these, solution polymerization is preferred.
- This solution polymerization can be performed by usual methods, which include a method of putting a predetermined monomer(s) in a reactor together with an organic solvent, adjusting the temperature of the reactor, thereafter, adding a polymerization initiator to start the polymerization, and terminating the polymerization with a deactivating agent such as various functional group-containing compounds at the point of time when the polymerization has been fully made.
- a deactivating agent such as various functional group-containing compounds
- the organolithium compounds include (1) alkyllithium compounds such as n-butyllithium, sec-butyllithium and tert-butyllithium, (2) alkylenedilithium compounds such as 1,4-dilithiumbutane, (3) aromatic hydrocarbon lithium compounds such as phenyllithium, stilbenelithium, diisopropenylbenzenelithium, and a reaction product of the above-mentioned alkyllithium compound with divinylbenzene, (4) polynuclear hydrocarbon lithium compounds such as lithium naphthalene, (5) other lithium compounds such as amino lithium and tributyltin lithium.
- alkyllithium compounds such as n-butyllithium, sec-butyllithium and tert-butyllithium
- alkylenedilithium compounds such as 1,4-dilithiumbutane
- aromatic hydrocarbon lithium compounds such as phenyllithium, stilbenelithium, diisopropenylbenzene
- an ether compound such as dimethoxybenzene or tetrahydrofuran
- a tertiary amine compound such as triethylamine or pyridine
- an activating agent such as potassium benzoate or potassium dodecylbenzenesulfonate can also be used.
- the organic solvent there can be used a hydrocarbon solvent such as n-hexane, cyclohexane, heptane or benzene.
- a hydrocarbon solvent such as n-hexane, cyclohexane, heptane or benzene.
- the polymerization temperature and polymerization time are not particularly limited, the polymerization temperature can be from 0 to 130°C, and particularly, it is preferably from 10 to 100°C.
- the polymerization time can be from 5 minutes to 24 hours, and particularly, it is preferably from 10 minutes to 10 hours.
- the polymerization system may be either a batch polymerization system or a continuous polymerization system.
- extending oils include aromatic, naphtenic and paraffinic extending oils which have been ordinarily used as extending oils for rubber, and one containing an aromatic extending oil in an amount of 15 to 50% by weight is particularly preferred.
- any method may be used as long as it is a general method.
- Such methods include a method of emulsifying a predetermined monomer (s) in an aqueous medium in the presence of an emulsifier, initiating the polymerization by using a radical polymerization initiator, and then terminating the polymerization by using a polymerization terminator at the point of time when a predetermined conversion has been achieved.
- an anionic surfactant such as a rosin acid salt, as well as a potassium or sodium salt of a long chain fatty acid having 10 or more carbon atoms such as oleic acid or stearic acid.
- radical polymerization initiator there can be used an organic peroxide such as benzoyl peroxide, di-tert-butyl peroxide or dicumyl peroxide.
- organic peroxide such as benzoyl peroxide, di-tert-butyl peroxide or dicumyl peroxide.
- a redox catalyst can also be used, as well as a diazo compound represented by azobisisobutyronitrile, an inorganic peroxide represented by potassium persulfate.
- radical polymerization initiators may be used either alone or in combination of two or more of them.
- conjugated diene-based (co)polymer rubber latex After termination of the polymerization, unreacted monomers are removed from a formed conjugated diene-based (co)polymer rubber latex as needed by means of steam distillation or the like, and the conjugated diene-based (co) polymer rubber is aggregated as crumb. This crumb is washed, dehydrated and then dried with a drier or the like, thereby being able to obtain conjugated diene-based (co) polymer rubber (II) .
- an oil-extended rubber by mixing an aqueous solution of a surfactant with an extending oil to prepare an emulsified product of the extending oil by stirring, and then, mixing this with a conjugated diene-based (co)polymer rubber latex to perform aggregation.
- a conjugated diene-based (co)polymer rubber latex As the extending oil, there can be used one described above.
- the Mooney viscosity [ML 1+4 (100°C)] of the above-mentioned oil-extended rubber is preferably from 20 to 150 and particularly preferably from 30 to 100.
- the Mooney viscosity [ML 1+4 (100°C)] of the above-mentioned rubber component containing the above-mentioned conjugated diene-based (co)polymer rubber (II) is preferably from 20 to 200 and particularly preferably from 30 to 150.
- Mooney viscosity is less than 20, the wear resistance of the vulcanized rubber is deteriorated in some cases.
- Exceeding 200 results in a tendency to deteriorate the processability of the rubber.
- the conjugated diene or the conjugated diene and the aromatic vinyl compound may be (co) polymerized using the organic lithium compound and/or the lithium amide compound as the initiator, and then, a tin compound or a silicon compound may be allowed to react as a coupling agent.
- the tin compounds include the above-mentioned tin compound (g) used as the coupling agent for (co) polymer rubber (I), and the silicon compounds similarly include the above-mentioned silicon compound (d) used as the coupling agent for (co)polymer rubber (I).
- tin compounds and/or silicon compounds are used in (co)polymer rubber (II) in an amount yielding 50 to 600 ppm, preferably 100 to 500 ppm, in terms of tin atom and/or silicon atom. Further, it is preferred that the tin compounds and/or silicon compounds are allowed to react in an amount of 0.1 to 1.0 equivalent, preferably in an amount of 0.2 to 0.6 equivalent, based on the living polymer chain.
- component (I) is less than 0.5% by weight, the effect of improving processability is not observed in some cases.
- exceeding 35% by weight results in deterioration of the wear resistance of the vulcanized rubber in some cases.
- An extending oil such as an aromatic process oil or a naphthenic process oil, or a liquid polymer having a weight average molecular weight of 150,000 or less may be added to components (I) and (II) used in the invention, thereby decreasing the Mooney viscosity, which also makes it possible to use without a problem in processability.
- the extending oil used is not particularly limited, as long as it is an extending oil or a softening agent ordinarily used in a diene-based rubber.
- a mineral oil-based extending oil is preferably used.
- the mineral oil extending oils are a mixture of an aromatic oil, an alicyclic oil and an aliphatic oil, and classified into the aromatic family, alicyclic family and aliphatic family, according to the amount ratio thereof. Any of them can be used in the present invention.
- an aromatic mineral oil having a viscosity-gravity constant (V.G.C value) of 0.900 to 1.049
- an aliphatic mineral oil having a V.G.C of 0.800 to 0.899 are preferably used in terms of low hysteresis loss properties/wet-skid resistance.
- the filler (silica and/or carbon black) may be incorporated therein, or after components (I) and (II) have been blended with the filler, the extending oil may be incorporated therein.
- the former is the former.
- the amount of the extending oil is from 10 to 50 parts by weight, and preferably from 15 to 45 parts by weight, based on 100 parts by weight of the total amount of components (I) and (II) which are rubber components.
- the amount of the extending oil is less than 10 parts by weight, the effect of adding it is not observed in some cases. On the other hand, exceeding 50 parts by weight results in reduced breaking strength.
- the filler is incorporated into the rubber composition of the invention.
- the filler which is incorporated into the rubber composition of the invention is not particularly limited, as long as it is an inorganic compound.
- examples thereof include silica, carbon black (including a carbon-silica dual phase filler) clay, calcium carbonate, magnesium carbonate .
- silica, a combination of carbon black and silica, a carbon-silica dual phase filler or a combination of a carbon-silica dual phase filler and carbon black and/or silica is preferably used.
- a lamellar inorganic compound can be used.
- examples thereof include swellable mica, montmorillonite, bentonite, saponite, hectorite, organic modified swellable mica, organic modified montmorillonite, organic modified bentonite, organic modified saponite, organic modified hectorite.
- the silica includes, for example, wet process silica, dry process silica and synthetic silicate silica.
- High in reinforcing effect is silica having a small particle size.
- One of a small particle size and high aggregation type (high surface area, high oil absorption) is good in dispersibility in the rubber, so that it is preferred in respect to physical properties and processability.
- the average particle size of the silica is preferably from 5 to 60 ⁇ m, and more preferably from 10 to 35 ⁇ m, by the primary particle size. Further, the specific surface area (BET method) thereof is preferably from 45 to 280 m 2 /g.
- carbon black is suitably used.
- carbon black preferred is carbon black manufactured by the furnace process and having a nitrogen adsorption specific surface area of 50 to 200 m 2 /g and a DBP oil absorption of 80 to 200 ml/100 g, and examples thereof include one of the FEF class, the HAF class, the ISAF class, the SAF class.
- One of a high aggregation type is preferred among others.
- the carbon-silica dual phase filler can be incorporated either alone or together with the carbon black and/or the silica.
- the carbon-silica dual phase filler is so-called silica coating carbon black in which silica is chemically bonded to the surface of carbon black, and commercially available from Cabot Corporation as CRX2000, CRX2002 or CRX2006 (trade name)
- the carbon-silica dual phase filler can be used in combination with a filler other than that.
- a filler other than that.
- the simultaneously usable filler examples thereof include the above-mentioned carbon black and/or silica, clay, calcium carbonate, magnesium carbonate.
- the carbon black and/or silica are preferred among others.
- the filler may be blended with the mixed rubber composition of component (I) and component (II) (a wet blend method), or dry blended with the mixture of component (I) and component (II) (a dry blend method).
- examples thereof include a method of adding the filler to a mixed polymer rubber solution of conjugated diene-based (co) polymer rubbers (I) and (II), followed by mixing in a slurry state.
- This method can operationally omit a process of mixing components (I) and (II), and is preferred because of excellent mixing uniformity of both.
- the filler is added to the polymer solution, it is preferably added after the termination of the polymerization, for example, after the addition of the terminal modifier or after the addition of the polymerization terminator. A necessary amount of the filler is added to the polymer rubber solution containing an organic solvent, and mixed well in a slurry state (a first process).
- a crumb is obtained by a steam stripping method of blowing steam into the polymer rubber slurry solution containing the filler, or (2) the polymer rubber slurry solution containing the filler is directly desolvated by a means such as an extruder or a devolatilizer to separate the rubber-inorganic compound composite from the solvent (a second process).
- the resulting wet rubber-inorganic compound composite is dried with a vacuum drier, a hot air dryer, a roll as needed (a third process), thereby being able to isolate the desired rubber-filler composite.
- the dry blend method it is also possible to blend a mixed rubber of conjugated diene (co) polymer rubbers (I) and (II) with the filler to prepare the rubber-inorganic compound composite.
- a blending process there is employed a single-screw extruder, a twin-screw extruder, a Banbury mixer, a roll, a kneader, a plastomill, and the kneading temperature is suitably from 50 to 200°C.
- the amount of the filler incorporated is from 1 to 150 parts by weight, and preferably from 20 to 120 parts by weight, based on 100 parts by weight of the total of the rubber components containing components (I) and (II). Less than 1 part by weight results in insufficiency of the improving effect due to the filler, whereas exceeding 150 parts by weight results in too small the amount of the rubber based on the filler, which makes it difficult to take out the composite comprising the rubber and the filler.
- the (oil-extended) rubber composition of the invention is prepared as a rubber composition by incorporating another rubber component, a filler and the like, as well as components (I) and (II) which are the (co)polymer rubbers used in the invention.
- the rubber composition of the invention another rubber component such as natural rubber, polyisoprene rubber, polybutadiene rubber or emulsion-polymerized styrene-butadiene rubber, a variety of filler such as carbon black or silica, and a variety of compounding agent, as well as components (I) and (II) (including the oil-extended (co) polymer rubber) of the invention, are kneaded by means of a roll or a Banbury mixer, and sulfur, a vulcanization accelerator are added to prepare the rubber composition, which can be used as a belt, another vibration-proof rubber or another industrial product, starting with a rubber for a tire such as a tread, a sidewall or a carcass, as well as a vibration-damping material for an constraint board.
- another rubber component such as natural rubber, polyisoprene rubber, polybutadiene rubber or emulsion-polymerized styrene-butadiene rubber, a variety of fill
- the filler is from 1 to 150 parts by weight, preferably from 20 to 120 parts by weight, based on 100 parts by weight of the rubber components. Less than 1 part by weight results in insufficiency of the improving effect due to the filler, whereas exceeding 150 parts by weight results in too hard a material prepared to be put to practical use.
- the filler in order to improve hysteresis loss characteristics, it is desirable to incorporate at least 1 part by weight of the filler, preferably 5 to 100 parts by weight of silica, and further 0.5 to 20% by weight of the silane coupling agent based on silica.
- the amount of silica incorporated is less than 1 part by weight, improvement of hysteresis loss characteristics is not sufficient.
- silica including the carbon-silica dual phase filler
- silane coupling agent may be incorporated either in the preparation of the above-mentioned rubber-inorganic compound composite of the invention or in the preparation of the rubber composition of the invention
- the silane coupling agent is used in order to increase its reinforcing effect when the silica is used as the filler.
- the silane coupling agent means a compound having both a constituent component reactable with the silica surface such as an alkoxysilyl group and a constituent component reactable with the rubber, particularly a carbon-carbon double bond, such as a polysulfide, a mercapto group or an epoxy group, in its molecule.
- the silane coupling agents include, for example, bis-(3-triethoxysilylpropyl) tetrasulfide, bis(2-triethoxy-silylethyl) tetrasulfide, 3-mercaptopropyltrimethoxysilane, 3-triethoxysilylpropyl-N,N-dimethylthiocarbamoyl tetra-sulfide, 3-triethoxysilylpropylbenzothiazole tetrasulfide .
- the use of the silane coupling agent can increase its reinforcing effect, when the silica is used or the carbon black and silica are used together as the filler, or when the carbon-silica dual phase filler is used as the filler.
- a vulcanizing agent in the rubber composition of the invention, can be used preferably within the range of 0.5 to 10 parts by weight, and more preferably within the range of 1 to 6 parts by weight, based on 100 parts by weight of all rubber components.
- the vulcanizing agents include typically sulfur, and additionally a sulfur-containing compound, a peroxide.
- a vulcanization accelerator such as a sulfenamide-based, guanidine-based or thiuram-based accelerator may be used in an amount according to need.
- zinc white, a vulcanization auxiliary, an antiaging agent, a processing aid may be used in an amount according to need.
- a method for kneading the rubber composition of the invention is not particularly limited. However, when the filler contains silica, the kneading can also be carried out by the following method, in order to sufficiently achieve reinforcement with silica and to more improve the physical properties of the vulcanized rubber.
- the methods for kneading the rubber composition of the invention containing the rubber components (including the rubber-inorganic compound composite), silica, the silane coupling agent, zinc white and the vulcanizing agent include (a) a method of incorporating silica into rubber components (I) and (II), followed by kneading to prepare a first rubber composition, then, incorporating the silane coupling agent into the first rubber composition, followed by kneading to prepare a second rubber composition, and subsequently, incorporating zinc white and the vulcanizing agent into the second rubber composition, followed by kneading, or (b) a method of incorporating silica into rubber components (I) and (II), followed by kneading to prepare a first rubber composition, then, incorporating the silane coupling agent into the first rubber composition, followed by kneading, further incorporating zinc white, continuing the kneading to prepare a second rubber composition, and subsequently incorporating the
- no silane coupling agent coexists in kneading the rubber components (including the rubber-inorganic compound composite) with silica, so that the kneading temperature can be elevated to 170 to 180°C. Accordingly, silica can be sufficiently dispersed by fewer kneading times.
- Various compounding agents for the rubber composition of the invention are not particularly limited. However, in order to improve processability at the time of kneading or to more improve a balance among wet-skid characteristics, low hysteresis loss and wear resistance, the following compatibilizing agent can also be added at the time of kneading.
- the preferred compatibilizing agent is an organic compound selected from an epoxy group-containing compound, a carboxylic acid compound, a carboxylic acid ester compound, a ketone compound, an ether compound, an aldehyde compound, a hydroxyl group-containing compound and an amino group-containing compound, or a silicone compound selected from an alkoxysilane compound, a siloxane compound and an aminosilane compound.
- organic compounds of the compatibilizing agents include the following compounds:
- Epoxy group-containing compounds butyl glycidyl ether, diglycidyl ether, propylene oxide, neopentyl glycol diglycidyl ether, an epoxy resin, epoxidized soybean oil, epoxidized fatty acid ester.
- Carboxylic acid esters adipic acid, octylic acid, methacrylic acid.
- Carboxylic acid ester compounds an acrylic acid ester, diethylene acrylate, ethyl methacrylate, an orthoacetic acid ester, ethyl acetoacetate, butyl acetate, isopropyl acetate, dimethyl carbonate, p-hydroxyphenylacetic acid, a polyester-based plasticizer, stearic acid-based plasticizer.
- Ketone compounds methylcyclohexane, acetylacetone.
- Ether compounds isopropyl ether, dibutyl ether.
- Aldehyde compounds undecylenealdehyde, decylaldehyde, vanillin, 3,4-dimethoxybenzaldehyde, cuminaldehyde.
- Amino group-containing compounds isopropylamine, diisopropylamine, triethylamine, 3-ethoxypropylamine, 2-ethylhexylamine, isopropanolamine, N-ethylethylenediamine, ethyleneimine, hexamethylenediamine, 3-lauryloxypropylamine, aminophenol, aniline, 3-isopropoxyaniline, phenylenediamine, aminopyridine, N-methyldiethanolamine, N-methylethanolamine, 3-amino-1-propanol, ethylamine hydrochloride, n-butylamine hydrochloride.
- Hydroxyl group-containing compounds isopropyl alcohol, butanol, octanol, octanediol, ethylene glycol, methylcyclo-hexanol, 2-mercaptoethanol, 3-methyl-3-methoxy-1-butanol, 3-methyl-1,5-pentanediol, 1-octadecanol, diethylene glycol, butylene glycol, dibutylene glycol, triethylene glycol.
- epoxy group-containing compounds amino group-containing compounds and hydroxyl group-containing compounds are preferred.
- silicone compounds of the compatibilizing agents include alkoxysilane compounds: trimethylmethoxysilane, trimethylethoxysilane, dimethyldimethoxysilane, methyltriethoxysilane, methyltriphenoxysilane, tetraethoxysilane, methyldiethoxysilane, vinyltrimethoxysilane and the like; siloxane compounds: a dimethylsiloxane oligomer, a silicone oil, an amino-modified silicone oil, an epoxy-modified silicone oil, a carboxyl-modified silicone oil, a polyether-modified silicone oil, an alkyl-modified silicone oil, a higher fatty acid ester-modified silicone oil, a higher alkoxy-modified silicone oil, a higher fatty acid-containing silicone oil; and aminosilane compounds: hexamethyldisilazane, nona-methyltrisilazane, anilitrimethylsilane, bis(dimethyl-amin
- the weight average molecular weight (Mw) was determined in terms of polystyrene, using gel permeation chromatography (GPC) (Type 244 manufactured by Waters).
- a copolymer rubber was dissolved in toluene, and reprecipitation purification with methanol was conducted twice, followed by vacuum drying. Then, the alkoxysilyl group content was determined from a calibration curve prepared by the absorption in the vicinity of 1,160 cm -1 caused by a Si-C bond according to an infrared absorption spectrum.
- a raw material rubber was kneaded in a 250-cc Labo Plastomill according to a compounding formulation shown in Table 4, and then, vulcanized at 145°C for a specific period of time to obtain a vulcanizate. Using the vulcanizate, various measurements were conducted.
- ⁇ at a speed of 5 km/hour was measured in accordance with ASTM E-1911-98. It is indicated by an index, and a larger value shows higher and better wet grip.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 41.3 g of tetrahydrofuran, 125 g of styrene, 365 g of 1,3-butadiene and 0.05 g of divinylbenzene. After the temperature of the contents in the reactor was adjusted to 20°C, 358 mg of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 87°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 9.3 g of tetrahydrofuran, 50 g of styrene and 440 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 20°C, 358 mg of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 87°C.
- An autoclave reactor having an internal volume of 16 liters in which the atmosphere was replaced with nitrogen was continuously charged with 1,3-butadiene at 25.0 g/minute and styrene at 14.05 g/minute as monomers, cyclohexane at 237.1 g/minute and tetrahydrofuran at 3.0 g/minute as solvents, and n-butyllithium at 18.67 mg/minute.
- the temperature of the reactor was controlled at 75°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 7.2 g of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 92°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 1.5 g of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 90°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 11.8 g of piperidine and 15 g of n-butyllithium were added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 88°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 779 mg of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 90°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 1.5 g of n-butyllithium was added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 90°C.
- An autoclave reactor having an internal volume of 5 liters in which the atmosphere was replaced with nitrogen was charged with 2,500 g of cyclohexane, 27 g of tetrahydrofuran, 216 g of styrene and 374 g of 1,3-butadiene. After the temperature of the contents in the reactor was adjusted to 10°C, 11.8 g of piperidine and 15 g of n-butyllithium were added to initiate polymerization. The polymerization was conducted under adiabatic conditions, and the maximum temperature reached 88°C.
- Copolymer rubber C and the solution of copolymer rubber D were mixed with each other in amounts of 95 g and 5 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- the solution of copolymer rubber C and the solution of copolymer rubber F were mixed with each other in amounts of 99 g and 1 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- the solution of copolymer rubber C and the solution of copolymer rubber F were mixed with each other in amounts of 70 g and 30 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber B and the solution of copolymer rubber D were mixed with each other in amounts of 95 g and 5 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber A and the solution of copolymer rubber E were mixed with each other in amounts of 90 g and 10 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber C and the solution of copolymer rubber D were mixed with each other in amounts of 95 g and 3 g, respectively, in terms of solid content, and 20 g of an extending oil (T-DAE manufactured by Fuji Kosan Co. , Ltd.) was further added. Desolvation was performed by steam stripping, and the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber B Only the solution of copolymer rubber B was used in an amount of 100 g in terms of solid content, and desolvation was performed by steam stripping. The rubber was dried with a heated roll of 115°C to obtain a rubber composition. A compounded rubber prepared according to a compounding formulation shown in Table 4, using this rubber composition, was vulcanized, and subjected to evaluation of physical properties. The results thereof are shown in Table 5.
- the solution of copolymer rubber C and the solution of copolymer rubber G were mixed with each other in amounts of 95 g and 5 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber B and the solution of copolymer rubber E were mixed with each other in amounts of 62 g and 38 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber A and the solution of copolymer rubber I were mixed with each other in amounts of 90 g and 10 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- copolymer rubber B and the solution of copolymer rubber H were mixed with each other in amounts of 90 g and 10 g, respectively, in terms of solid content, and desolvation was performed by steam stripping.
- the rubber was dried with a heated roll of 115°C to obtain a rubber composition.
- the rubber composition of the invention is excellent in processability, and is excellent in low hysteresis loss properties and satisfactory in failure strength, and further has low dynamic-to-static modulus ratio and high tan ⁇ , when it is subjected to vulcanization treatment to form a vulcanized rubber.
- the composition is therefore also useful as a vibration-proof material, as well as a material for a tread of a tire for low fuel consumption, a large sized tire or a high performance tire.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Tires In General (AREA)
Claims (4)
- Composition de caoutchouc consistant en(I) 0,5 à 35% en poids d'un caoutchouc (co)polymère à base de diène conjugué représenté par la formule (1) ou (2) suivante ayant un groupe amino et un groupe alcoxysilyle sur une chaîne polymère et ayant un poids moléculaire moyen en poids de 1 000 à 90 000 tel que mesuré par GPC (chromatographie par perméation sur gel),
dans lequel la teneur du groupe amino principal lié au caoutchouc (co)polymère est de 1 à 600 mmol/kg de polymère de caoutchouc (co)polymère,
la teneur du groupe alcoxysilyle lié au caoutchouc (co)polymère est de 1 à 600 mmol/kg de polymère de caoutchouc (co)polymère,
la quantité du diène conjugué utilisé est de 50 à 95% en poids sur la base de tous les monomères, et
la teneur du composé vinylique aromatique lié, lié à la chaîne polymère, est de 5 à 50% en poids sur la base du caoutchouc (co)polymère,
et(II) 99,5 à 65% en poids d'un caoutchouc (co)polymère à base de diène conjugué ayant un poids moléculaire moyen en poids de 100 000 à 2 000 000 (sous réserve que (I)+(II) = 100% en poids) en termes de polystyrène tel que mesuré par GPC (chromatographie par perméation sur gel) ;
dans laquelle le caoutchouc polymère d'un monomère diène conjugué est dérivé du 1,3-butadiène, de l'isoprène, du 2,3-diméthyl-1,3-butadiène ou du chloroprène, - Composition de caoutchouc selon la revendication 1, dans laquelle le composant (II) a au moins un choisi parmi le groupe consistant en un groupe amino, un groupe alcoxysilyle, un groupe époxy, un groupe hydroxyle, un atome d'étain et un atome de silicium, sur une chaîne polymère.
- Composition de caoutchouc selon la revendication 1 ou 2, dans laquelle la composition contient en outre une huile de dilution dans une quantité de 10 à 50 parties en poids sur la base de 100 parties en poids de la quantité totale des composants (I) et (II).
- Composition de caoutchouc selon l'une quelconque des revendications 1 à 3 dans laquelle la composition contient en outre une silice et/ou un noir de carbone, et la teneur de ceux-ci est de 1 à 150 parties en poids sur la base de 100 parties en poids de la quantité totale des composants caoutchouc contenant les composants (I) et (II).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004058614 | 2004-03-03 | ||
PCT/JP2005/003452 WO2005085343A1 (fr) | 2004-03-03 | 2005-03-02 | Composition de caoutchouc |
Publications (3)
Publication Number | Publication Date |
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EP1721930A1 EP1721930A1 (fr) | 2006-11-15 |
EP1721930A4 EP1721930A4 (fr) | 2009-09-02 |
EP1721930B1 true EP1721930B1 (fr) | 2015-01-28 |
Family
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Application Number | Title | Priority Date | Filing Date |
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EP05719767.5A Active EP1721930B1 (fr) | 2004-03-03 | 2005-03-02 | Composition de caoutchouc |
Country Status (7)
Country | Link |
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US (1) | US7981966B2 (fr) |
EP (1) | EP1721930B1 (fr) |
JP (1) | JP4775582B2 (fr) |
KR (1) | KR101158141B1 (fr) |
CN (1) | CN1993415B (fr) |
TW (1) | TW200602430A (fr) |
WO (1) | WO2005085343A1 (fr) |
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-
2005
- 2005-03-01 TW TW094106118A patent/TW200602430A/zh unknown
- 2005-03-02 CN CN2005800067848A patent/CN1993415B/zh active Active
- 2005-03-02 KR KR1020067017731A patent/KR101158141B1/ko active IP Right Grant
- 2005-03-02 WO PCT/JP2005/003452 patent/WO2005085343A1/fr not_active Application Discontinuation
- 2005-03-02 JP JP2006510679A patent/JP4775582B2/ja active Active
- 2005-03-02 EP EP05719767.5A patent/EP1721930B1/fr active Active
- 2005-03-02 US US10/591,279 patent/US7981966B2/en not_active Expired - Fee Related
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Publication number | Publication date |
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WO2005085343A1 (fr) | 2005-09-15 |
EP1721930A1 (fr) | 2006-11-15 |
EP1721930A4 (fr) | 2009-09-02 |
TW200602430A (en) | 2006-01-16 |
CN1993415B (zh) | 2010-05-26 |
JP4775582B2 (ja) | 2011-09-21 |
CN1993415A (zh) | 2007-07-04 |
KR101158141B1 (ko) | 2012-06-19 |
US7981966B2 (en) | 2011-07-19 |
KR20070017122A (ko) | 2007-02-08 |
JPWO2005085343A1 (ja) | 2007-12-13 |
US20070185267A1 (en) | 2007-08-09 |
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